Surface contact battery

A surface contact battery, comprising:

• a lithium battery cell, with an initial positive electrode and an initial negative electrode;
• a bracket, provided at an end where the initial positive electrode of the lithium battery cell is located, and provided with a first avoidance hole for exposing or protruding the initial positive electrode and a side avoidance hole connected to the initial negative electrode;
• a top PCB board, which is provided on the bracket, a positive pin of the top PCB board is electrically connected to the initial positive electrode through the first avoidance hole, and a negative pin is connected to the initial negative electrode through the side avoidance hole and the electrical connection strip;
• a conductive protective cover, provided with an accommodation cavity for accommodating the lithium battery cells, the bracket, and the top PCB board;
• a plug-in positive electrode, electrically connected to the top PCB board and protruding towards a top;
• a plug-in negative electrode, which is electrically connected to the top PCB board and protrudes towards the top;
• one of the plug-in positive electrode and the plug-in negative electrode is cylindrical and surrounds the other, and the surrounded plug-in positive electrode/plug-in negative electrode is cylindrical or cylinder-shape protruding;
• and
• an outer membrane, made of insulating material and wrapping the conductive protective cover, and the plug-in positive electrode and plug-in negative electrode protruding outside the conductive protective cover and the outer membrane.